Below are several reasons why the referral may not be valid:
•The person who clicked the link is already an Alibaba.com user.
•The user clicked on your link and didn’t post a valid Buying Request.
•The user clicked on your link but did not complete the registration on the same day.
•The referred member posted a valid Buying Request and subsequently canceled or closed it within the same day.
•The referred members were detected as robots or false members. If this occurs, all your credits will be invalidated